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new 5b9e0f6 [LANG-1487] Add ClassLoaderUtils with toString()
implementations. (#453)
5b9e0f6 is described below
commit 5b9e0f6df6a75faf97f29701b016e00d0324a413
Author: Gary Gregory <[email protected]>
AuthorDate: Mon Sep 9 10:04:23 2019 -0400
[LANG-1487] Add ClassLoaderUtils with toString() implementations. (#453)
[LANG-1487] Add ClassLoaderUtils with toString() implementations for
URLClassLoader.
---
.../org/apache/commons/lang3/ClassLoaderUtils.java | 53 ++++++++++++++++++++++
.../apache/commons/lang3/ClassLoaderUtilsTest.java | 50 ++++++++++++++++++++
2 files changed, 103 insertions(+)
diff --git a/src/main/java/org/apache/commons/lang3/ClassLoaderUtils.java
b/src/main/java/org/apache/commons/lang3/ClassLoaderUtils.java
new file mode 100644
index 0000000..95cdd2a
--- /dev/null
+++ b/src/main/java/org/apache/commons/lang3/ClassLoaderUtils.java
@@ -0,0 +1,53 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.commons.lang3;
+
+import java.net.URLClassLoader;
+import java.util.Arrays;
+
+/**
+ * Helps work with {@link ClassLoader}.
+ *
+ * @since 3.10
+ */
+public class ClassLoaderUtils {
+
+ /**
+ * Converts the given class loader to a String calling {@link
#toString(URLClassLoader)}.
+ *
+ * @param classLoader to URLClassLoader to convert.
+ * @return the formated string.
+ */
+ public static String toString(final ClassLoader classLoader) {
+ if (classLoader instanceof URLClassLoader) {
+ return toString((URLClassLoader) classLoader);
+ }
+ return classLoader.toString();
+ }
+
+ /**
+ * Converts the given URLClassLoader to a String in the format
+ * {@code "URLClassLoader.toString() + [URL1, URL2, ...]"}.
+ *
+ * @param classLoader to URLClassLoader to convert.
+ * @return the formated string.
+ */
+ public static String toString(final URLClassLoader classLoader) {
+ return classLoader + Arrays.toString(classLoader.getURLs());
+ }
+}
diff --git a/src/test/java/org/apache/commons/lang3/ClassLoaderUtilsTest.java
b/src/test/java/org/apache/commons/lang3/ClassLoaderUtilsTest.java
new file mode 100644
index 0000000..21b0d2e
--- /dev/null
+++ b/src/test/java/org/apache/commons/lang3/ClassLoaderUtilsTest.java
@@ -0,0 +1,50 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.commons.lang3;
+
+import java.io.IOException;
+import java.net.URL;
+import java.net.URLClassLoader;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Tests {@link ClassLoaderUtils}.
+ */
+public class ClassLoaderUtilsTest {
+
+ @Test
+ public void testToString_ClassLoader() throws IOException {
+ final URL url = new URL("http://localhost";);
+ try (URLClassLoader urlClassLoader = new URLClassLoader(new URL[] {
url })) {
+ @SuppressWarnings("resource")
+ final ClassLoader classLoader = urlClassLoader;
+ Assertions.assertEquals(String.format("%s[%s]", classLoader, url),
ClassLoaderUtils.toString(classLoader));
+ }
+ }
+
+ @Test
+ public void testToString_URLClassLoader() throws IOException {
+ final URL url = new URL("http://localhost";);
+ try (URLClassLoader urlClassLoader = new URLClassLoader(new URL[] {
url })) {
+ Assertions.assertEquals(String.format("%s[%s]", urlClassLoader,
url),
+ ClassLoaderUtils.toString(urlClassLoader));
+ }
+ }
+}
